- (Topic 4)
You have just taken over as the Network Administrator for a medium sized company. You want to check to see what services are exposed to the outside world. What tool would you use to accomplish this?

1. A. Network mapper
2. B. Protocol analyzer
3. C. A port scanner
4. D. Packet sniffer

Correct Answer: C

A port scanner is often used on the periphery of a network by either administrators or hackers. It will tell you what ports are open. By determining what ports are open, you know what services are exposed to the outside world. For example, if port 80 is open, then HTTP traffic is allowed, meaning there should be a Web server on the network. Answer: A is incorrect. Network mappers give a topography of the network, letting you know what is on your network and where it is connected. Answer: B is incorrect. A protocol analyzer does detect if a given protocol is moving over a particular network segment, thus would detect services working on that segment. However, a port scanner is a better tool for detecting all the ports that are open. Answer: D is incorrect. Packet sniffers are used to intercept traffic and to detect the contents of that traffic.

- (Topic 2)
What does a firewall check to prevent certain ports and applications from getting the packets into an Enterprise?

1. A. The network layer headers and the session layer port numbers
2. B. The transport layer port numbers and the application layer headers
3. C. The application layer port numbers and the transport layer headers
4. D. The presentation layer headers and the session layer port numbers

Correct Answer: B

A firewall stops delivery of packets that are not marked safe by the Network Administrator. It checks the transport layer port numbers and the application layer headers to prevent certain ports and applications from getting the packets into an Enterprise. Answer A, C, D are incorrect. These information are not checked by a firewall.

- (Topic 1)
You work as a Network Administrator for XYZ CORP. The company has a Windows Server 2008 network environment. The network is configured as a Windows Active Directory- based single forest network. You configure a new Windows Server 2008 server in the network. The new server is not yet linked to Active Directory. You are required to accomplish the following tasks: Add a new group named "Sales". Copy the "Returns" group from the older server to the new one. Rename the "Returns" group to "Revenue". View all group members, including for multiple groups/entire domain. You use Hyena to simplify and centralize all of these tasks. Which of the assigned tasks will you be able to accomplish?

1. A. Copy the "Returns" group to the new server.
2. B. Rename the "Returns" group to "Revenue".
3. C. Add the new group named "Sales".
4. D. View and manage all group members, including for multiple groups/entire domain.

Correct Answer: ABC

Hyena supports the following group management functions: Full group administration such as add, modify, delete, and copy Rename groups Copy groups from one computer to another View both direct and indirect (nested) group members for one or more groups [only for Active Directory] View all group members, including for multiple groups/entire domain [only for Active Directory] Answer D is incorrect. All group members can neither be viewed nor managed until the new server is linked to Active Directory.

- (Topic 2)
Which of the following commands can be used to intercept and log the Linux kernel messages?

1. A. syslogd
2. B. klogd
3. C. sysklogd
4. D. syslog-ng

Correct Answer: BC

The klogd and sysklogd commands can be used to intercept and log the Linux kernel messages.

- (Topic 1)
In which of the following is absolute size of frames expressed?

1. A. Bits
2. B. Percentage
3. C. Inches
4. D. Pixels

Correct Answer: D

Absolute size of frames is expressed in pixels. Size is expressed in terms of the number of pixels in a frame. Therefore, a change in the screen area of a display device does not affect the absolute frame size of a Web page.